An anatomy teacher hypothesizes that the final grades in her class are distributed as $10 \%$ A's, $23 \%$ B's, $45 \%$ C's, 14\% D's, and $8 \%$ F's. At the end of the semester, she has the follo grades.
$$\begin{array} { l l l l l }
\text { A } & \text { B } & \text { C } & \text { D } & \text { F } \
6 & 14 & 22 & 8 & 4
\end{array}$$
Find the critical value. Use $\alpha = 0.05$.
A) 9.488
B) 9.236
C) 7.779
D) 11.070

Question

An anatomy teacher hypothesizes that the final grades in her class are distributed as $10 \%$ A's, $23 \%$ B's, $45 \%$ C's, 14\% D's, and $8 \%$ F's. At the end of the semester, she has the follo grades.
$$\begin{array} { l l l l l } 
\text { A } & \text { B } & \text { C } & \text { D } & \text { F } \
6 & 14 & 22 & 8 & 4
\end{array}$$
Find the critical value. Use $\alpha = 0.05$.
A) 9.488
B) 9.236
C) 7.779
D) 11.070

Quizplus · Accepted Answer

The critical value for a chi-square test with 4 degrees of freedom (categories - 1) at $\alpha = 0.05$ is 9.488.

An Anatomy Teacher Hypothesizes That the Final Grades in Her 10%10 \%10%

An Anatomy Teacher Hypothesizes That the Final Grades in Her $10 \%$